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Finding the Fourth Proportional to 414,915.60, 620,939.80 and 248,822.80

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Solution

The fourth proportional to 414,915.60, 620,939.80 and 248,822.80 is: 372,374.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,915.60 : 620,939.80 = 248,822.80 : x
  2. Step 2: Convert to fraction form
    414,915.60/620,939.80 = 248,822.80/x
  3. Step 3: Cross multiply
    414,915.60x = 620,939.80 × 248,822.80
  4. Step 4: Simplify right side
    414,915.60x = 154,503,979,667.44
  5. Step 5: Solve for x
    x = 154,503,979,667.44/414,915.60
  6. Step 6: Final answer
    x = 372,374.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.